.oul {
    width: 450px;
    height: 50px;
    line-height: 50px;
    display: flex;
    text-align: center;

}

.oul li {
    flex: 1;
    background: #544f6b;
    color: #8478B3;
}

.context {
    width: 450px;
    height: 400px;
    background: #544f6b;
    color: #8478B3;
    text-align: center;
    font-size: 32px;
    line-height: 400px;
}

.active {
    background: #fff !important;
}